End of the drier season · Weather & things to do
Maui in September
Maui's warmest month brings highs averaging 73°F (23°C), lows of 70°F (21°C) and about 1.5 in (38 mm) of rain.
At 91/100 for comfort (2nd of 12), it's one of the best months to visit.
- Avg high
- 73°F (23°C)
- Avg low
- 70°F (21°C)
- Rain
- 1.5 in (38 mm)
- Humidity
- 78%
- Cloud cover
- 39%
- Daylight
- ~12 h 07 min
- Comfort score
- 91/100 · Great
What September feels like
Highs settle around 73°F (23°C), warm enough for short sleeves.
Nights cool to an average low of 70°F (21°C).
With 78% average humidity, it feels muggy.
Rain is moderate at about 1.5 in (38 mm) for the month.
It's breezy, with average winds near 12 mph (5.5 m/s) at ground level.
Plan around September
September is one of Maui's best months on the climate data.
- Last of the best-scoring months: by October, the score drops to 86/100.
- Comfort holds steady from August (91 → 91/100).
- September sits inside the Apr – Oct window our Hawaii Paradise route recommends.
What to pack for September
- Light, breathable clotheshighs average 73°F
- Sunscreen, sunglasses and a hatstrong sun this month
- Quick-dry fabrics78% average humidity
- Windproof shellaverage wind 12 mph
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Maui in September
September is good outdoor weather here, so these picks lean toward the open air.
ʻĪao Valley State Monument
Short paved walk to view the 1,200-ft ʻĪao Needle in a green valley.
Why now September scores 91/100 for comfort, good conditions for being outside.
Molokini Crater
Boat snorkel trip to a half-sunken crater with very clear water.
Why now Highs near 73°F and 1.5 in of monthly rain make this an easy outdoor pick.
Waiʻānapanapa State Park
Black sand beach, sea caves and lava coastline near Hana.
Why now One to do outside while the weather is on your side.
Mama's Fish House
Oceanfront Kuau restaurant that names the fisherman who caught your fish.
Road to Hana
Winding coastal drive with waterfalls, bamboo forest and lookouts.
Nearby in September
- Big Island in September~97 mi · highs 56°F, 4.7 in rain · 9°C (17°F) cooler by day, wetter
- Kailua & Lanikai in September~99 mi · highs 81°F, 1.4 in rain · 4°C (8°F) warmer by day, about as wet
- Waikiki in September~103 mi · highs 83°F, 2.0 in rain · 6°C (10°F) warmer by day, about as wet
- Oahu in September~116 mi · highs 81°F, 2.0 in rain · 5°C (8°F) warmer by day, about as wet
NASA POWER 2001–2025 monthly averages on a ~50 km grid, temperatures adjusted from the grid cell's ~154 m to Maui's ~662 m elevation (standard lapse rate). Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Maui in September: quick answers
Is September a good time to visit Maui?
Yes. On the climate data it's one of the best months, scoring 91/100. Expect highs of 73°F (23°C) and 1.5 in (38 mm) of rain. September is inside the Apr – Oct window our Hawaii Paradise route recommends.
How hot is Maui in September?
Average highs are 73°F (23°C) and average lows 70°F (21°C), making it the warmest month by daytime highs.
Does it rain a lot in Maui in September?
Not much: about 1.5 in (38 mm) of rain falls across September on average, the 4th-driest month of the year. The annual total is about 24.4 in (620 mm).
What should I pack for Maui in September?
Bring light, breathable clothes (highs average 73°F), sunscreen, sunglasses and a hat (strong sun this month), quick-dry fabrics (78% average humidity), windproof shell (average wind 12 mph) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in September
- Hawaii Paradise Apr – Oct
Planning Maui in September?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.